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Pore Fluid and Lithology Discrimination of a Well in the Niger Delta Region using Elastic Parameters

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Agbasi O. E., Chukwu G. U., Igboekwe M. U., E. Etuk E. E.

World News of Natural Sciences

2018

vol. 17

75-88

With respect to the high uncertainties associated with methods of determining lithology and pore fluid using well logs, quantitative rock physics analyses was used to determine the lithology and pore fluid of a reservoir in the Niger Delta. Inaccurate prediction of lithology and pore fluid results in the inaccurate determination of other petrophysical properties and parameters such as porosity, permeability, net pay, etc. The primary objective of this research is to predict lithology and pore fluid using rock physics analysis. However, reservoir zones were also predicted. Density, compressional wave velocity and shear wave velocity logs were used as input to calculate elastic parameters such as velocity ratio, Poisson’s ratio and Bulk Modulus. The calculated velocity ratio log was used to differentiate between sand and shale. Poisson’s ratio and velocity ratio using the Goodway interpretation template was carried out and used to delineate pore fluid content; gas sand, oil sand and sandstone formation from cross-plot analysis.

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1 World News of Natural Sciences

1 2018

1 Agbasi O. E.

1 Chukwu G. U.

1 E. Etuk E. E.

1 Igboekwe M. U.

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Pore Fluid and Lithology Discrimination of a Well in the Niger Delta Region using Elastic Parameters